/*
 *  Copyright 2009 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.mybatis.generator.codegen.mybatis3.xmlmapper.elements;

import static org.mybatis.generator.internal.util.StringUtility.stringHasValue;

import org.mybatis.generator.api.dom.xml.Attribute;
import org.mybatis.generator.api.dom.xml.TextElement;
import org.mybatis.generator.api.dom.xml.XmlElement;

/**
 * 
 * @author Jeff Butler
 * 
 */
public class SelectByExampleWithoutBLOBsElementGenerator extends
        AbstractXmlElementGenerator {

    public SelectByExampleWithoutBLOBsElementGenerator() {
        super();
    }

    @Override
    public void addElements(XmlElement parentElement) {
        String fqjt = introspectedTable.getExampleType();

        XmlElement answer = new XmlElement("select"); //$NON-NLS-1$

        answer.addAttribute(new Attribute("id", //$NON-NLS-1$
                introspectedTable.getSelectByExampleStatementId()));
        answer.addAttribute(new Attribute(
                "resultMap", introspectedTable.getBaseResultMapId())); //$NON-NLS-1$
        answer.addAttribute(new Attribute("parameterType", fqjt)); //$NON-NLS-1$

        context.getCommentGenerator().addComment(answer);

        answer.addElement(new TextElement("select")); //$NON-NLS-1$
        XmlElement ifElement = new XmlElement("if"); //$NON-NLS-1$
        ifElement.addAttribute(new Attribute("test", "distinct")); //$NON-NLS-1$ //$NON-NLS-2$
        ifElement.addElement(new TextElement("distinct")); //$NON-NLS-1$
        answer.addElement(ifElement);

        StringBuilder sb = new StringBuilder();
        if (stringHasValue(introspectedTable
                .getSelectByExampleQueryId())) {
            sb.append('\'');
            sb.append(introspectedTable.getSelectByExampleQueryId());
            sb.append("' as QUERYID,"); //$NON-NLS-1$
            answer.addElement(new TextElement(sb.toString()));
        }
        answer.addElement(getBaseColumnListElement());

        sb.setLength(0);
        sb.append("from "); //$NON-NLS-1$
        sb.append(introspectedTable
                .getAliasedFullyQualifiedTableNameAtRuntime());
        answer.addElement((new TextElement(sb.toString())));
        answer.addElement(getExampleIncludeElement());

        ifElement = new XmlElement("if"); //$NON-NLS-1$
        ifElement.addAttribute(new Attribute("test", "orderByClause != null"));
        ifElement.addElement(new TextElement("order by ${orderByClause}"));
        answer.addElement(ifElement);
        //---------------增加分页added by oxj  生成对应的xml配置分页的节点---------------------------
        XmlElement foreachElement = new XmlElement("foreach"); 
        foreachElement.addAttribute(new Attribute("collection", "oredCriteria")); 
        foreachElement.addAttribute(new Attribute("item","criteria"));
        
        ifElement = new XmlElement("if");
        ifElement.addAttribute(new Attribute("test","criteria.valid"));
        foreachElement.addElement(ifElement);
        
        XmlElement foreach2Element = new XmlElement("foreach"); 
        foreach2Element.addAttribute(new Attribute("collection", "criteria.criteria")); 
        foreach2Element.addAttribute(new Attribute("item","criterion"));
        ifElement.addElement(foreach2Element);
        
        XmlElement if2Element = new XmlElement("if");
        if2Element.addAttribute(new Attribute("test","criterion.limitValue"));
        foreach2Element.addElement(if2Element);
        
        if2Element.addElement(new TextElement("limit ${criterion.value},${criterion.secondValue}")); 
        answer.addElement(ifElement);
        /**  以上创建的分页节点结构如下
         *   <foreach collection="oredCriteria" item="criteria">
   		 *		<if test="criteria.valid">
   		 *	 		<foreach collection="criteria.criteria" item="criterion">
   		 *	 	 		<if test= "criterion.limitValue">
      	 *					limit ${criterion.value},${criterion.secondValue}
      	 *				</if>
      	 *	 		</foreach>
      	 *		</if>
    	 *	</foreach>
         */
        //------------------------------------------

        if (context.getPlugins()
                .sqlMapSelectByExampleWithoutBLOBsElementGenerated(answer,
                        introspectedTable)) {
            parentElement.addElement(answer);
        }
    }
}
